JPS5824069A - Door lock - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a door lock incorporating an unlocking mechanism in the grip handle.

In conventional door locks, as shown in Figure 1, the grip handle (A) is fixed and does not have an unlocking function, and the unlock lever (B) provided at the top of the grip handle is pressed with the thumb. The launch bolt was operated by pressing the bolt. By the way, since the actuation force from fingers is relatively weak, the latch bolt part of the lock is pressed against the strike due to warping due to the material of the door itself and the difference in temperature between the inside and outside of the door, increasing the back load of the launch bolt. In this case, it becomes impossible to operate the unlock lever with your finger, and the lock cannot be unlocked.

The present invention has been made by focusing on the above points, and incorporates an unlocking mechanism into the grip handle, and utilizes the grip force as an operating force to easily drive and unlock the latch bolt, which has a large back load. It was made so that it could be done.

An embodiment of the present invention will be described below with reference to the drawings.
In FIG. 2, person is the door, B is the lock body, and 0 is the grip handle.

In the lock body B, 1 is a dead bolt, and 2 is a launch bolt, which are configured to be freely accessible from the front plate 3. 4
is a cylinder lock for operating the deadbolt installed on the outside of the room,
Reference numeral 5 denotes a deadbolt operation zamtano provided on the indoor side.

FIG. 3 shows a side view of the lock body B, and as shown in the figure, a notch 6a is formed in the lower part of the case 6, and the notch B
A latch drive plate 7 is provided within the IL so as to be movable up and down. An end portion of a lever to be described later is located at the bottom of the latch drive plate 7. The internal structure of the lock body is known as shown in Japanese Utility Model Application No. 50-41996.

The grip handles C are provided opposite to each other on the inside and outside of the door handle at the lower part of the lock body B. The grip handle C is formed in a substantially U-shape, and a suppressing moving plate 9 is provided with respect to the grip portion 8a of the mounting case portion 8.

That is, spring guide bins 1 are provided on both sides of the suppression moving plate 9.
0.10 is fixed and the spring guide bin 10.1
0 is slidably engaged with the mounting case portion 8 and is urged outward by a spring 11.11 wound around the bottle.

12.12 is Esu/g and acts as a stopper.

Inside the mounting case part 8 are levers 13 that are combined in an abbreviated shape.
The v-bar 14 is rotatably supported by the bin 15,
The end of the lever 14 faces the launch drive plate 7 at the lower part of the lock body B, and the end of the lever 13 is pivotally connected to the connecting plate 9a at the center of the pressing plate 9 by the pin 16. is the long hole 8 in the mounting case part 8
It is movably located within b.

The suppression moving plate 9 is provided with a cover 17 having a U-shaped cross section.
A cover 18 is further provided on the side of the cover 17.

Although the above description has been made in detail regarding the outer grinobundle part, the inner part also has the same configuration.

A hub 20 is provided on the square shaft 19 for driving the deadbolt in the cylinder lock 4, and a drive pin 21 provided on the knob 20 engages with a horizontally elongated hole 22a in a lock plate 22 provided so as to be vertically movable. When the deadbolt 1 is locked by the cylinder lock 4, the lock plate 22 moves from the opening 8C of the mounting case portion 8 to the movement trajectory of the spring guide bin 10, as shown by the imaginary line in FIG. At the same time, the lever 14 enters the locus of movement of the lever 14.

Reference numeral 23 designates a fixed plate, which has a spring guide pin 24, and is provided with a ball 25 which is urged by a built-in spring in the spring guide pin 24 and is always in pressure contact with the lock plate 22. When the plate 22 is raised, the ball 251d engages in the locking recess 22b at the opposite position of the lock plate 22, thereby preventing the lock plate 22 from falling unintentionally.

In the above arrangement, when the doorman grasps the grip handle C, the suppression displacement plate 9 is pressed down against the spring 11, which causes the lever 13, 14 to rotate and drive the latch bolt.

When locking the deadbolt (dXO lock plate enters the movement trajectory of the spring guide pin and lever,
The suppression moving plate becomes inoperable.

Since the present invention is constructed as described above, by grasping the grip handle, the latch bolt unlocking mechanism built into the grip handle can be actuated with a large force, and the back load of the launch bolt is reduced to a large force. It has the feature that it can be easily unlocked even when the door is open.

Further, in the present invention, since the suppressing movement plate becomes inoperable when the deadbolt is locked, unnecessary unlocking operations for the launch bolt can be avoided.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a conventional door lock, Fig. 2 is a front view of the door lock according to the present invention, Fig. 3 is a side view of the lock body, Fig. 4 is a cross-sectional view of the grip handle, and Fig. 5 is a front view of the door lock according to the present invention. The same operating state diagram as above,
FIG. 6 is an explanatory diagram of the lock plate drive mechanism. 2.Latch bolt, C.Grip handle, 9.
- Suppression moving plate, 13.14...Lever, 22...Lock plate.

Claims (1)

[Claims] A grip handle is provided with a suppressing moving plate and a lever driven by the suppressing moving plate, the lever operates to unlock the latch bolt in the lock body, and the movement of the suppressing moving plate is restricted when the deadbolt is locked. A door lock characterized by comprising a locking member.